1. Naively or unreasonably optimistic
   "I found the article regarding earnings growth slightly Panglossian" 
2. Of or relating to the view that this is the best of all possible worlds

Encyclopedia: Panglossian

• shapeliness
• shapely
• shaper
• shaping
• shaping machine
• shaping tool
• Shapley
• shard
• share
• share-out
• sharecrop
• sharecrop farmer
• sharecropper
• shared
• shared out
• shareholder
• shareholding
• shareowner
• sharer
• shareware
• Shari
• Shari River
• sharia
• sharia law
• shariah